Bar support



June 12,1928. 1,673,360

- G. F. HAUF BAR SUPPORT Filed Aug. 26, 1925 Patented June 12, 1928.

UNITED STATES 1,673,360 PATENT OFF-ICE r. naur, or oHIeAso, rntrnors,assronon ro'enrcaeo METAL ma or cnrcaeo, rumors, A eonronacrron orrunners.

BAR surronn Application filerlAugustQG, 1925. Serial No. 52,572.

The main objects of this invention are to provide improved means forsupporting reinforcing bars used in concrete construction work; toprovide a bar support and spacer particularly adapted for use in roadconstruction for supporting the bar above the ground and for spacing itfrom the side molds; to provide improved means for clampingthe bar tothe support and for securing the support in an upright position on theground; to provide clamping means of this lrind which also serves as aspacer for spacing the support from the side mold; and to provide a barsupport of this kind which may be conveniently shifted along the groundpreparatory to securing it inits final position so as to permit the barsto be readily and accurately adjusted. I

Illustrative embodiments of this invention are shown in the accompanyingdrawing, wherein I V Figure 1 is a side elevation of one of the barsupports and spacers in use, the dotted outline representing theextended position of the pin.

Fig. 2 is another side elevation of the same, taken from the right ofFig. 1. I

Fig. 3 is a transverse section, taken on the line 3-3 of Fig. l. i

Fig. 4 is a side elevation of one of the improved bar supports withoutthe spacing strip. I

Fig. 5 is a plan of a modified form of bar support, showing areinforcing bar supported thereon.

Flgr. 6 is a central vertical section of the same, taken on the line 6-6of Fig. 5.

Fig. 7 is a transverse section of the same, taken on the line 7--7 of Fi 6.

In the forms shown, the improved bar supports are used for supportingreinforcii bars 1 which are embedded in the concrete a uniform distancefrom the ground 2. Certain of the bar supports, which support the outerrows of bars, are also provided with means for spacing the outer rows auniform distance from the vertical side walls 3 which form the molds forthe sides of the road.

In the specific constructions shown, the improved bar support and spacercomprises a chair adapted to be supported in an up right position on theground and a vertically shiftable pin arranged to be driven into theground for securing the chair thereon.

pin is arranged to be moved into securing the reinforcing bar to thechair by the driving of the pin intothe ground. Both the chair and pinmay be sheet metal stampings, which are comparatively inexpensive andstill of sufiicient Part of the position for strength to, withstand thestrain to which they are likely to be subjected. The may be slidablysupported on the chair by various means. The preferred construction isshown in Fig-s1 to 4 inclusive.

In the preferred construction, the improved bar support comprises asubstantially channel-shaped chair 4 adapted to be supported on end anda vertically shiftalole pin pin 5 arranged to be driven into the ground.

The channel-shaped chair 4: comprises a pair of sidefianges 6 and a backweb 7, which are bent outwardly atther lower ends to providesupporting-flanges 8, which are adapted to rest on the ground forsecuring the chairs against tilting while they. are being set up. Formedin the upper ends of the side flanges 6, are recesses 9 which provide aseat for the reinforcing bar 1. A plurality of transverse slots 10,arranged in pairs, are formed in theback Web 7, and the material betweenthe slots of eachpair is bent inwardly so as to, form a gnideway 11 forslidably supporting the pin 5. The slots are out slightly into the sideflanges 6, so as to provide suiiicient material between each pair ofslots to permit the portionsll to be bent away from the remainder of theback, as clearly shown in Fig. 3.

In the form shown, the pin 5 comprises a narrow strip of metal which isbent to sub- Stantially V.-shape in cross section for the purpose ofrigidity. The lower end of the pin is tapered to facilitate driving itinto the ground and also to facilitate its entry into guideway 11. Theupper part of the pin 5 is bent at substantially right angles thereto toprovide an armor stop 12 which movable into engagement with the bar 1for securing it to the seat 9 when the pin is driven into the ground,The pins used for clamping the outer rows of reinforcing bars areslightly diiferent in construction than those used for clamping theinner rows of bars, as shown in Fig.1. In the construction shown in Fig.l, the upper part of the pin projects laterally considerably beyond thechair to form a spacer arm 13 adapted to abut against the side mold 3for spacing the outer rows of bars a. uniform distance from the edges ofthe road.

In the modified construction shown in Fi 5. (3 and 7, the chaircomprises a back 14: which ,is bent to conform to the shape of the pin.and apair of side flanges 15 which are bent inwardly adjacent the back14 to provide shoulders 16 for slidably engaging the lateral edges ofthe pin. The shoulders 16 and back 14 form a guideway for slidablysupporting the pin. The side flanges 15 are inclined outwardly so as togive the chair greater stability. Supporting flanges 17 are formed atthe lower ends of the chair, and recesses 18 at the upper ends of theflanges 15 provide the seat for the reinforcing bar.

In operation. the chairs are set. up on the ground in rows inapproximately the desired locations. The reinforcing bars are thenplaced on the chairs and the latter are then properly alined and shiftedto the desired positions. The pins 5 ma then be driven into the groundto secure the chairs in their upright positions and to bring the arms 12and 13 into position for locking the bars to the chairs.

Although but certain specific embodiments of this invention have beenherein shown and described, it is to be understood that numerous detailsof the construction shown may be altered or omitted without departingfrom the spirit of this invention as delined by the following claims.

I claim:

1. A device of the class described comprisin a chair having a seat forsupporting a bar at one end thereof, a substantiall flat unobstructedbearing surface on the other end thereof disposed in a plane atsubstantially right angles to the axis of the body of the chair andadapted to slide on a sup porting surface the end of said chair havingsaid bearing surface being devoid of projections which would interferewith such sliding movement, means on said for securing a bar to saidseat. and other means slidably engaging said chair so as to be adaptedto be driven into the supporting surface for securing said chairthereon.

Q. A device of the class described comprising a chair adapted to besupported on end on the ground. a substantially flat unobstructedbearing surface arranged at one end thereof in a planv at. substantiallyright angles to the axis of the body of the chair so as to be slidableon the ground upon which said chair rests, the end of said chair havingsaid bearing surface being devoid of projections which would interferewith such sliding movement. the other end of said chair having a seatfor supporting a bar, and means for securing a bar to said seat. saidmeans slidably engaging said chair so as to be adapted to be driven intothe ground for securing said chair thereon.

35. A device of the class described comprising a ehanmbshaptul chairadapted to be supported on end on the ground, the flanges of saidchannel-shaped chair being recessed in the upper ends thereof to providea seat; for a bar, parts struck out from the web of said chair betweenthe flanges to form. a guideway, and a vertically shiftable pin mountedin said guideway so as to be adapted to be driven into the ground forsecuring the chair in an upright position. the upper end of said pinbeing bent at substantially right angles thereto to form an arm movableinto engagement with the bar for securing it, to said seat, the lowerends of the web and flanges being bent outwardly to provide supportingflanges adapted to rest. on the ground.

Signed at Chicago this 19th day of August, 1925.

GEORGE F. HAUL.

chair 1

